Free points but can someone help me on my last question posted? pleasee

Which speed is the fastest (use 1 mile ≈ 1.6 kilometers)? a. 12 miles/hour b. 18 feet/second c. 19 kilometers/hour d. cannot be determined

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

In the sixth grade 13 out of 20 students have a dog if there are 152 sixth grade students how many of them have a dog